毕业论文-基于单片机的定时开关设计.docx

基于单片机的定时开关设计摘要单片机从发明之初到现在已经是一项十分成熟的技术，并且被广泛应用于科研与生活的方方面面当中。利用单片机能够达到定时控制操作的目的，而这一应用能够在日常生活与科学研究中发挥到举足轻重的作用。针对能够定时操作的要求，本设计旨在能够完成一种以ST89C52单片机为核心的定时开关装置，具有设置初始时间，设定时间以及通过LED显示的主要功能。通过设计总体框图，绘制电路图以及仿真图等方式来完成总体的设计。本次设计采用的是总线型结构的单片机，总线型结构的单片机可以减少不同之间信息传送线的条数，从而使信息传送规格整齐，提高了整机的可靠性。关键词：单片机，定时，智能，开关The Design of Timing Switch Based on MicrocontrollersElectronic Information Science and Technology 11-2 WangNingSupervisor Fan XiuhuaAbstractThe technology ofmicrocontrollers has been very mature from the beginning invention to the present and is widely used in all aspects of scientific research and the normal life. Using microcontrollers can control time to achieve the purpose of the timing operation, while this application can be able to play an important role in daily life and scientific research. Due to the request of timing operation, the design is intended to be able to complete a timer switch means to ST89C52 microcontroller as the core, and has main functions of set time and display via LED. By design overall block diagram, draw circuit diagrams and simulation diagrams way to complete the design. The design uses a microcontrollers of bus structure, MCU bus structure can reduce the number of transmission lines between the different information, so that information transmission specifications and tidy, improving the overall reliability.Key Words :microcontrollers,timing,intelligent,switch目录1 绪论………………………………………………………………………………………………………11.1单片机发展历程……………………………………………………………………………………11.2单片机的应用………………………………………………………………………………………22 STC89C52RC单片机介绍…………………………………………………………………………………52.1 STC89C52RC单片机结构……………………………………………………………………………52.2 STC89C52RC单片机功能………………………………………………………………………… 112.2.1 捕获模式………………………………………………………………………………………112.2.2自动重装模式…………………………………………………………………………………122.2.3 波特率发生器模式……………………………………………………………………………133设计制作…………………………………………………………………………………………………153.1 系统总体框图………………………………………………………………………………………153.2各模块电路图………………………………………………………………………………………153.2.1最小系统电路…………………………………………………………………………………153.